Number of 1 Bits

class Solution {
public:
    int hammingWeight(uint32_t n) {
        int c = 0;
        while (n) { n &= n - 1; ++c; }
        return c;
    }
};

func hammingWeight(n int) int {
    c := 0
    for n != 0 {
        n &= n - 1
        c++
    }
    return c
}

class Solution:
    def hammingWeight(self, n: int) -> int:
        c = 0
        while n:
            n &= n - 1
            c += 1
        return c

function hammingWeight(n) {
    let c = 0;
    while (n !== 0) {
        n &= n - 1;
        c++;
    }
    return c;
}

class Solution {
    public int hammingWeight(int n) {
        int c = 0;
        while (n != 0) {
            n &= n - 1;
            c++;
        }
        return c;
    }
}

function hammingWeight(n: number): number {
    let c = 0;
    while (n !== 0) {
        n &= n - 1;
        c++;
    }
    return c;
}